Challenge Latex Inner Tube Size:700 x 33-40c These wedges are designed to

These wedges are designed to create a tilting option for aerobar brackets that do not offer the option to tilt

Features Sapim Sprint spokes and durable brass nipples

SpeedCore is an innovative tubeless-ready construction that consists of a thin air-tight layer of rubber compound infused of aramid particles

40" WT tubeless ready tires

and the CeramicSpeed Bearings inside guarantee 3-5 times longer longevity compared to commonly used standard pulleys on the market

Challenge Latex Inner Tube Size:700 x 33-40c These wedges are designed toChallenge produces the only seamless 'one piece' latex inner tubes on the market providing a smooth, balanced ride with no pucker or bump like those found on other tubes. Latex tubes are lighter, thinner and more flexible than a butyl tube, increasing your comfort, lowering your rolling resistance, and helping to prevent flats. The tube also includes a removable core Presta valve making them compatible with both inline and external valve extenders.